VOL-3212: Fix uni-trap flow match and actions

Change-Id: Iba217562a7631a9ab7dc49a4636d8f5f1a3e3a80
(cherry picked from commit 9a50f033c5fd9d9668d1095cefb9c31424936723)
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/flows/flow_utils.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/flows/flow_utils.go
index 66e719c..9b800bf 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/flows/flow_utils.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/flows/flow_utils.go
@@ -491,6 +491,35 @@
 	return nil
 }
 
+func GetSetActionField(ctx context.Context, flow *ofp.OfpFlowStats, ofbType ofp.OxmOfbFieldTypes) (uint32, bool) {
+	if flow == nil {
+		return 0, false
+	}
+	for _, instruction := range flow.Instructions {
+		if instruction.Type == uint32(APPLY_ACTIONS) {
+			actions := instruction.GetActions()
+			for _, action := range actions.GetActions() {
+				if action.Type == SET_FIELD {
+					setField := action.GetSetField()
+					if setField.Field.GetOfbField().Type == ofbType {
+						switch ofbType {
+						case VLAN_PCP:
+							return setField.Field.GetOfbField().GetVlanPcp(), true
+						case VLAN_VID:
+							return setField.Field.GetOfbField().GetVlanVid(), true
+						default:
+							logger.Errorw(ctx, "unsupported-ofb-field-type", log.Fields{"ofbType": ofbType})
+							return 0, false
+						}
+					}
+				}
+			}
+			return 0, false
+		}
+	}
+	return 0, false
+}
+
 func GetTunnelId(flow *ofp.OfpFlowStats) uint64 {
 	if flow == nil {
 		return 0